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Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
it cannot be ascertained
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase 'it cannot be ascertained' is correct and usable in written English.
You can use it when the exact information is unknown or cannot be determined. For example: "The true date of the painting's creation is unknown; it cannot be ascertained."
✓ Grammatically correct
Science
Academia
News & Media
Alternative expressions(14)
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
39 human-written examples
It cannot be ascertained in this proceeding whether or not 15percentnt.
Academia
It cannot be ascertained that that value was what he most regarded.
Academia
In the nature of things, it cannot be ascertained from the record whether the railroad company now exacts the rates complained of as being discriminatory and which it was the purpose of the suit to correct; but if it does, of course the power to question the legality of such rates by a suit in equity, brought like the one now here, clearly exists.
Academia
Presently, the oldest commonly agreed upon fossil microorganisms (it cannot be ascertained whether these organisms were archaebacteria, bacteria, or perhaps members of another no-longer-existent line of organism) are dated back to approximately 3.45 billion years ago (Schopf 1993).
A spokesman for the Lancashire force said they "believe there was an investigation in the late 1960s, but as no records are now held, it cannot be ascertained whether a file was passed to the Director of Public Prosecutions".
News & Media
The optimal size of herds has not been determined in the context of Soqotra's grazing resources and the frequency of the island's climatic vagaries (e.g. unpredictable rainfall and drought); therefore, it cannot be ascertained whether this figure exceeds the island's carrying capacity – if such a measure can be meaningfully established.
Science
Human-verified similar examples from authoritative sources
Similar Expressions
21 human-written examples
Although it cannot be ascertain, the enhanced expression of IL-10, IFNγ, TNFα and IL-1β transcripts in the prostate may reflect protein expression as all these cytokines are known to be up-regulated in immune cells during the course of HIV and SIV infection [74], [75].
Science
It cannot be ascertain whether alterations in expression levels of proteins described above are directly affecting muscle contraction, even if MYBP-C2 (myofibril - GO 0030016), which is a protein belonging to contractile apparatus, was found to be up-regulated in AQP4−/− mice.
Science
In addition, no potential neuroprotective therapy, such as TTM, was provided, so that its influence cannot be ascertained.
Science
The assumption is that it was recovered in the 19th century, although where and when cannot be ascertained, nor is it clear why it was only published as late as 1972.
News & Media
It is not known and cannot be ascertained whether or not "God" secures a religiously adequate referent.
Encyclopedias
Expert writing Tips
Best practice
Use "it cannot be ascertained" in formal writing when emphasizing that information is definitively unobtainable or impossible to determine with the available resources or methods. It adds a tone of authority and finality to the statement.
Common error
Avoid using "it cannot be ascertained" in casual conversations or informal writing. Simpler phrases like "we don't know" or "it's not clear" are more appropriate for those settings.
Source & Trust
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "it cannot be ascertained" functions as a statement of epistemic uncertainty. It explicitly indicates that a particular fact or piece of information is impossible to determine with the available evidence or methods. The Ludwig AI confirms this usage.
Frequent in
Science
57%
Academia
29%
News & Media
14%
Less common in
Encyclopedias
0%
Wiki
0%
Formal & Business
0%
Ludwig's WRAP-UP
In summary, the phrase "it cannot be ascertained" is a formal expression used to indicate that something is impossible to determine with certainty. Ludwig AI confirms that it is grammatically correct and suitable for formal, scientific, and academic contexts, as shown by its frequent appearance in scientific publications and academic texts. While alternatives like "it is impossible to determine" exist, "it cannot be ascertained" carries a particular weight, emphasizing the definitive lack of obtainable information. When writing, reserve this phrase for situations where you want to highlight the impossibility of finding an answer, while avoiding it in casual speech to maintain an appropriate tone.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
it is impossible to determine
Emphasizes the impossibility of finding something out.
it remains unknown
Highlights the continuing lack of knowledge about something.
the answer is not clear
Focuses on the lack of a clear answer or resolution.
it is not possible to know
States the inability to obtain knowledge about something.
there is no way to find out
Indicates the absence of a method for discovering something.
the truth is elusive
Suggests that the truth is difficult to grasp or define.
it's difficult to say
Implies uncertainty and a lack of definitive information.
we cannot be sure
Expresses doubt and the lack of certainty about something.
it is uncertain
Highlights the condition of being not known or definite.
it is not definitively known
Underscores the absence of definitive knowledge or proof.
FAQs
What does "it cannot be ascertained" mean?
The phrase "it cannot be ascertained" means that something is impossible to determine or discover with certainty. It suggests that the information is unavailable or unobtainable through any known means.
When is it appropriate to use "it cannot be ascertained" in writing?
Use "it cannot be ascertained" in formal writing, research papers, or legal documents when you need to emphasize the impossibility of determining a fact or outcome. It is more suitable for formal contexts than casual conversations.
What are some alternative phrases to "it cannot be ascertained"?
Some alternatives include "it is impossible to determine", "it remains unknown", or "the answer is not clear". The choice depends on the specific nuance you wish to convey.
How does using "it cannot be ascertained" affect the tone of a sentence?
Using "it cannot be ascertained" adds a formal and authoritative tone to a sentence. It emphasizes the definitive lack of information, making the statement sound more conclusive and less open to speculation.
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Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested